A centrifuge tube reactor for the determination of bacterial methane oxidation enrichment factors

Biotransformation of methane at landfill sites can be estimated by applying compound specific stable isotope analysis of methane from the anaerobic and the cover layer surface zone. Next to these two input parameters, merely the knowledge of the carbon isotopic fractionation of the bacterial methane oxidation in terms of the enrichment factor (ε) is required. However, many factors and conditions have been described to affect ε. These include temperature, the applied landfill cover, the type of expressed methane monooxygenase (MMO), and cell density.

In this work we investigated the microbial methane oxidation with respect to temperature and type of methanotrophic enrichment culture. A newly designed setup was used to overcome potential CH4-substrate limitations such as diffusion that could affect the determined values of ε by improper and inhomogeneous mixing. The isotopic fractionation was determined based on the stable carbon isotope analysis of methane and carbon dioxide. The obtained value for isotopic fractionation was ε22°C = -0.0136 ± 0.0036. Also for the first time, bulk stable isotope analysis of bacterial cell mass was performed by flow Microcentrifuge Tube injection analysis isotope ratio mass spectrometry.

Sorption of PFOA onto different laboratory materials: Filter membranes and centrifuge tubes.

  • Measurement and reporting of concentrations of contaminants of emerging concern such as per- and polyfluoroalkyl substances (PFASs), including perfluorooctanoic acid (PFOA), is an integral part of most investigations.
  • Occurrence of sorption losses of PFAS analytes onto particular laboratory-ware (e.g. glass containers) has been suggested in the published literature but has not been investigated in detail.
  • We examined sorption losses from aqueous PFOA solutions in contact with different commonly-used materials in filter units and centrifuge tubes (glass and plastics).
  • Sorption of PFOA onto different filter membrane types ranged from 21-79% indicating that filtration can introduce a major source of error in PFOA analysis; pre-treatment of filter membranes with phosphate or methanol solutions did not improve PFOA recovery. Substantial adsorption of PFOA was also observed on tubes made from polypropylene (PP), polystyrene (PS), polycarbonate (PC), and glass where losses observed were between 32-45%, 27-35%, 16-31% and 14-24%, respectively.
  • Contrary to suggestions in the literature, our results indicated that the greatest sorption losses for PFOA occurred on PP, whereas losses on glass tubes were much lower. Variations in ionic strength and pH did not greatly influence PFOA recovery.
  • When PFOA concentrations were increased, the percent recovery of PFOA increased, indicating that binding sites on tube-walls were saturable. This study draws attention towards analytical bias that can occur due to sorption losses during routine procedures, and highlights the importance of testing the suitability of chosen laboratory-ware for specific PFAS analytes of interest prior to experimental use.
  • The centrifuge is among the oldest and most widely used pieces of laboratory equipment, with significant applications that include clinical diagnostics and biomedical research. A major limitation of laboratory centrifuges is their “black box” nature, limiting sample observation to before and after centrifugation. Thus, optimized protocols require significant trial and error, while unoptimized protocols waste time by centrifuging longer than necessary or material due to incomplete sedimentation.
  • Here, we developed an instrumented centrifuge tube receptacle compatible with several commercial benchtop centrifuges that can provide real-time sample analysis during centrifugation. We demonstrated the system by monitoring cell separations during centrifugation for different spin speeds, concentrations, buffers, cell types, and temperatures. We show that the collected data are valuable for analytical purposes (e.g. quality control), or as feedback to the user or the instrument.
  • For the latter, we verified an adaptation where complete sedimentation turned off the centrifuge and notified the user by a text message. Our system adds new functionality to existing laboratory centrifuges, saving users time and providing useful feedback. This add-on potentially enables new analytical applications for an instrument that has remained largely unchanged for decades.

Influence of the centrifuge time of primary plasma tubes on routine coagulation testing.

Preparation of blood specimens is a major bottleneck in the laboratory throughput. Reliable strategies for reducing the time required for specimen processing without affecting quality should be acknowledged, especially for laboratories performing stat analyses. The present investigation was planned to establish a minimal suitable centrifuge time for primary samples collected for routine coagulation testing.

Five sequential primary vacuum tubes containing 0.109 mol/l buffered trisodium citrate were collected from 10 volunteers and were immediately centrifuged on a conventional centrifuge at 1500 x g, at room temperature for 1, 2, 5, 10 and 15 min, respectively. Hematological and routine coagulation testing, including prothrombin time, activated partial thromboplastin time and fibrinogen, were performed. The centrifugation time was inversely associated with residual blood cell elements in plasma, especially platelets. Statistically significant variations from the reference 15-min centrifuge specimens were observed for fibrinogen in samples centrifuged for 5 min at most and for the activated partial thromboplastin time in samples centrifuged for 2 min at most.

Meaningful biases related to the desirable bias were observed for fibrinogen in samples centrifuged for 2 min at most, and for the activated partial thromboplastin time in samples centrifuged for 1 min at most. According to our experimental conditions, a 5-10 min centrifuge time at 1500 x g may be suitable for primary tubes collected for routine coagulation testing.

We quantified the formed elements of urine sediment using newly designed plastic centrifuge tubes with top and bottom openings and a 0.5 ml sized bottom ball (YZ tube).

This design minimizes the adherence of formed elements that occurs on the glass surface of conventional tubes. The numbers of white blood cells (WBC) and red blood cells (RBC) using glass tubes did not differ from those observed using YZ tubes. However, the YZ tube method detected renal casts more frequently than the conventional glass tube method; the detection rate for renal casts in normal urine samples was 21.4% vs 2.9%, in samples from hospitalized patients it was 47.5% vs 10.2%, and from patients with kidney disease it was 88.9% vs. 44.4%. Especially, the YZ tube method detected more hyaline casts in all types of samples.

Centrifuge Tubes, 15 ml ,PP,Sterile,Plug-Seal Cap, in Bag

LC8003-500 GenDepot 500/CS 208.8 EUR

Centrifuge Tubes, 50 ml ,PP,Sterile,Plug-Seal Cap, in Bag

LC8005-500 GenDepot 500/CS 241.2 EUR

Centrifuge Tubes, 15 ml , Black ,PP,Sterile

LC8007-050 GenDepot 50/Bag 121.2 EUR

Centrifuge Tubes, 15 ml , Black ,PP,Sterile

LC8007-500 GenDepot 500/CS 440.4 EUR

Centrifuge Tubes, 15 ml , Amber ,PP,Sterile

LC8015-500 GenDepot 500/CS 330 EUR

Centrifuge Tubes, 50 ml , Black ,PP,Sterile

LC8008-025 GenDepot 25/Bag 100.8 EUR

Centrifuge Tubes, 50 ml , Black ,PP,Sterile

LC8008-500 GenDepot 500/CS 586.8 EUR

Centrifuge Tubes, 50 ml , Amber ,PP,Sterile

LC8050-500 GenDepot 500/CS 330 EUR

Centrifuge Tubes, 50 ml ,PP,Sterile,Plug-Seal Cap,Self Standing, in Bag

LC8006-500 GenDepot 500/CS 360 EUR

15 mL Centrifuge Tube, Tubes and Caps Packed Separately, Non-Sterile, 50/pk, 500

601151 NEST Biotechnology 500 pcs/cs 37.29 EUR

Block, 15 x1.5ml centrifuge tubes

BSH100-15 Benchmark Scientific 1 PC 112.58 EUR

Block, 15 x1.5ml centrifuge tubes

BCM1405-B15 Bio Basic 1 pcs, 1 UNIT 194.76 EUR

50ml Conical Centrifuge Tubes, Green Cap, 25/Bag

CT788-G Bio Basic 1PK, 25UNIT 67.31 EUR

50ml Conical Centrifuge Tubes, Yellow Cap, 25/Bag

CT788-Y Bio Basic 1PK, 25UNIT 67.31 EUR

Stand For Centrifuge Tubes For 1.5 ml,

PW102-2NO EWC Diagnostics 1 unit 8.01 EUR

16 mm Test Tube Foam Rack (for 15 mL centrifuge tubes) - EACH

MIX1098 Scientific Laboratory Supplies EACH 54 EUR

Centrifuge Tubes, 15 ml ,PP,Sterile,Plug-Seal Cap, in Rack

LC8002-500 GenDepot 500/CS 218.4 EUR

29 mm Test Tube Foam Rack (for 50 mL centrifuge tubes) - EACH

MIX1118 Scientific Laboratory Supplies EACH 54 EUR

Centrifuge Tubes, 50 ml ,PP,Sterile,Plug-Seal Cap, in Rack

LC8004-500 GenDepot 500/CS 267.6 EUR

Corning LSE Single Block 5 x 50 mL Centrifuge Tubes - EACH

480129 Scientific Laboratory Supplies EACH 145.8 EUR

4-Ways Microtube and Centrifuge Tubes Racks, Red

R023-R Bio Basic 1 UNIT 64.18 EUR

15 mL Centrifuge Tube Rack, 1/pk, 50/cs

610001 NEST Biotechnology 50 pcs/cs 58.96 EUR

4-Ways Microtube and Centrifuge Tubes Racks, Blue

R023-B Bio Basic 1 UNIT 64.18 EUR

Greiner centrifuge tubes - PK300

T2193-300EA Scientific Laboratory Supplies PK300 232.07 EUR

Greiner centrifuge tubes - PK1000

T1943-1000EA Scientific Laboratory Supplies PK1000 411.75 EUR

4-Ways Microtube and Centrifuge Tubes Racks, Yellow

R023-Y Bio Basic 1 UNIT 64.18 EUR

Block, 15 x 1.5ml or 2.0ml centrifuge tubes (conical)

BSH100-1520 Benchmark Scientific 1 PC 112.58 EUR

Block, 15 x 1.5ml or 2.0ml centrifuge tubes (conical)

BCM1405-B1520 Bio Basic 1 pcs, 1 UNIT 194.76 EUR

4-Ways Microtube and Centrifuge Tubes Racks, Natural

R023-N Bio Basic 1 UNIT 64.18 EUR

Block for 5ml centrifuge tubes

H5000-5MT Benchmark Scientific 1 PC 494.19 EUR

Centrifuge Tubes, Autoclavable BLUE

CG264-1X100NO EWC Diagnostics 1 unit 12.63 EUR

Centrifuge Tubes, Autoclavable Round

CG276-1X100NO EWC Diagnostics 1 unit 23.15 EUR

Centrifuge Tubes, Autoclavable Round

CG277-1X100NO EWC Diagnostics 1 unit 12.79 EUR

Centrifuge Tubes, Autoclavable Round

CG278-1X100NO EWC Diagnostics 1 unit 9.07 EUR

Centrifuge Tubes, Autoclavable Round

CG279-1X100NO EWC Diagnostics 1 unit 3.24 EUR

15mL Sterile Centrifuge Tubes PP

ARG1818 Scientific Laboratory Supplies PK500 247.5 EUR

50mL Sterile Centrifuge Tubes PP

ARG1824 Scientific Laboratory Supplies PK500 339.57 EUR

Block, 20x10mm test tubes or 20x2.0ml centrifuge tubes

BSW10 Benchmark Scientific 1 PC 149.04 EUR

Block, 20x10mm test tubes or 20x2.0ml centrifuge tubes

BCM1412-BSW10 Bio Basic 1 pcs, 1 UNIT 233.21 EUR

Centrifuge Tubes, Autoclavable Conical

CG274-100X1NO EWC Diagnostics 1 unit 32.38 EUR

CapLock 0.5mL Centrifuge Tubes - PK500

ARG1782 Scientific Laboratory Supplies PK500 74.03 EUR

Oakridge Centrifuge Tubes 30ml - PK10

31390030 Scientific Laboratory Supplies PK10 307.8 EUR

CapLock 1.5mL Centrifuge Tubes - PK1000

ARG1808 Scientific Laboratory Supplies PK1000 132.19 EUR

Block, 24 x 0.5ml centrifuge tubes

BSW05 Benchmark Scientific 1 PC 149.04 EUR

Block, 24 x 0.5ml centrifuge tubes

BSH100-05 Benchmark Scientific 1 PC 112.58 EUR

Block, 24 x 0.5ml centrifuge tubes

BCM1405-B05 Bio Basic 1 pcs, 1 UNIT 194.76 EUR

Block, 24 x 0.5ml centrifuge tubes

BCM1412-BSW05 Bio Basic 1 pcs, 1 UNIT 233.21 EUR

Centrifuge Tubes S 2420 30ml Qfit - PK10

QBC24C24R0 Scientific Laboratory Supplies PK10 270 EUR

15 mL Centrifuge Tube, Bulk, Sterile, 50/pk, 500/cs

601052 NEST Biotechnology 500 pcs/cs 39.82 EUR

Block, 4 x 15ml centrifuge tubes

BSH100-150 Benchmark Scientific 1 PC 142.76 EUR

Block, 2 x 50ml centrifuge tubes

BSH100-500 Benchmark Scientific 1 PC 142.76 EUR

Block, 12 x 15ml centrifuge tubes

BSW15 Benchmark Scientific 1 PC 149.04 EUR

Block, 5 x 50ml centrifuge tubes

BSW50 Benchmark Scientific 1 PC 149.04 EUR

Block, 4 x 15ml centrifuge tubes

BCM1405-B150 Bio Basic 1 pcs, 1 UNIT 227.29 EUR

Block, 2 x 50ml centrifuge tubes

BCM1405-B500 Bio Basic 1 pcs, 1 UNIT 227.29 EUR

Block, 12 x 15ml centrifuge tubes

BCM1412-BSW15 Bio Basic 1 pcs, 1 UNIT 233.21 EUR

Block, 5 x 50ml centrifuge tubes

BCM1412-BSW50 Bio Basic 1 pcs, 1 UNIT 233.21 EUR

Centrifuge Tubes, with ring (leak proof)

PW1207-1X100NO EWC Diagnostics 1 unit 21.38 EUR

Centrifuge Tubes, Autoclavable RED Cap,

CG272-1X100NO EWC Diagnostics 1 unit 31.16 EUR

Centrifuge Tubes, Autoclavable With RED

CG271-1X100NO EWC Diagnostics 1 unit 40.01 EUR

Block for 5mL centrifuge tubes - EACH

MIX7218 Scientific Laboratory Supplies EACH 714.15 EUR

Block, 24 x1.5ml centrifuge tubes (conical)

BSW1500 Benchmark Scientific 1 PC 149.04 EUR

Block, 24 x1.5ml centrifuge tubes (conical)

BCM1412-BSW1500 Bio Basic 1 pcs, 1 UNIT 233.21 EUR

15mL Sterile Centrifuge Tubes PP - PK500

ARG1814 Scientific Laboratory Supplies PK500 304.04 EUR

50mL Sterile Centrifuge Tubes PP - PK500

ARG1820 Scientific Laboratory Supplies PK500 411.26 EUR

50 mL Centrifuge Tube Rack, 1/pk, 50/cs

610101 NEST Biotechnology 50 pcs/cs 58.96 EUR

50ml Plug-Seal Centrifuge Tubes with Rack, 25 tubes/rack

10-0501 IHC World - 12.5 EUR

Falcon Conical 50ml PP Centrifuge Tubes Bagged - PK500

352070 Scientific Laboratory Supplies PK500 226.8 EUR

Falcon Conical 15ml PP Centrifuge Tubes Bagged - PK500

352096 Scientific Laboratory Supplies PK500 193.05 EUR

50ml Conical Centrifuge Tubes, Polypropylene

21-106 Genesee Scientific 20 Racks of 25 Tubes, 500/Unit 101.53 EUR

50ml Conical Centrifuge Tubes, Polypropylene

21-108 Genesee Scientific 20 Bags of 25 Tubes, 500/Unit 81.01 EUR

15ml Conical Centrifuge Tubes, Polypropylene

28-101 Genesee Scientific 20 Racks of 25 Tubes, 500/Unit 89.45 EUR

15ml Conical Centrifuge Tubes, Polypropylene

28-103 Genesee Scientific 20 Bags of 25 Tubes, 500/Unit 74.7 EUR

50ml Conical Centrifuge Tubes, Polypropylene

28-106 Genesee Scientific 20 Racks of 25 Tubes, 500/Unit 107.43 EUR

50ml Conical Centrifuge Tubes, Polypropylene

28-108 Genesee Scientific 20 Bags of 25 Tubes, 500/Unit 85.75 EUR

Centrifuge 5804 + Rotor S-4-72 + adapters 15/50ml tubes - EACH

E5804000565 Scientific Laboratory Supplies EACH 7171.2 EUR

Eppendorf Adapter for 0.5 mL micro- centrifuge tubes + 0.6 ml Microtainer set of 6 - PK6

E5425716001 Scientific Laboratory Supplies PK6 17.48 EUR

Kimas high strength centrifuge tubes - PK6

Z514861-6EA Scientific Laboratory Supplies PK6 116.1 EUR

Centrifuge 5804R + Rotor S-4-72 + adapters 15/50ml tubes - EACH

E5805000665 Scientific Laboratory Supplies EACH 10750.05 EUR

Centrifuge 5810 + Rotor S-4-104 + adapters 15/50ml tubes - EACH

E5810000560 Scientific Laboratory Supplies EACH 10126.35 EUR

Tubes Centrifuge 15ml Conical - PK500

CEN9202 Scientific Laboratory Supplies PK500 259.2 EUR

Centrifuge 5810R + Rotor S-4-104 + adapters 15/50ml tubes - EACH

E5811000660 Scientific Laboratory Supplies EACH 13965.75 EUR

SINGLE BLOCK, 12 X 15ML CENTRIFUGE TUBES

480124 CORNING 1/pk 136.8 EUR

Block, 24 x 1.5ml or 2.0ml centrifuge tubes

BSW1520 Benchmark Scientific 1 PC 149.04 EUR

Block, 24 x 1.5ml or 2.0ml centrifuge tubes

BCM1412-BSW1520 Bio Basic 1 pcs, 1 UNIT 233.21 EUR

Block, 15 x 1.5ml Centrifuge Tubes for Dry Bath with Heated Lid

BSH100-15HL Benchmark Scientific 1 PC 112.58 EUR

Block, 15 x 1.5ml Centrifuge Tubes for Dry Bath with Heated Lid

BCM1405-B15HL Bio Basic 1 pcs, 1 UNIT 194.76 EUR

5 mL Centrifuge Tubes, Clear, Round, Lock Cap, Sterile, 200/pk, 2000/cs

603111 NEST Biotechnology 2000 pcs/cs 109.56 EUR

15 mL Centrifuge Tube, Rack(PS Rack), Sterile, 50/pk, 500/cs

601051 NEST Biotechnology 500 pcs/cs 43.01 EUR

250mL centrifuge tube PP (59.8 X 160mm), with screw-cap, 14 bags of 5 tubes

C1250 MTC Bio 70 234 EUR

CENTRIFUGE TUBE 50 ML 30 X 115 MM - PK500

T2318-500EA Scientific Laboratory Supplies PK500 334.89 EUR

250 mL PP Centrifuge Tubes with Plug Seal Cap, Sterile, 6/pk, 102/cs

622001 NEST Biotechnology 102 pcs/cs 129.8 EUR

500 mL PP Centrifuge Tubes with Plug Seal Cap, Sterile, 6/pk, 36/cs

623001 NEST Biotechnology 36 pcs/cs 61.05 EUR

Falcon Conical 225ml PP Centrifuge Tubes - PK48

352075 Scientific Laboratory Supplies PK48 149.85 EUR

15mL and 50ml Universal Rack for Conical Bottom Centrifuge Tubes - PK20

4366 Scientific Laboratory Supplies PK20 58.05 EUR

Falcon Conical 15ml Ps Centrifuge Tubes - PK500

352099 Scientific Laboratory Supplies PK500 221.4 EUR

5-Well Centrifuge Tube Box (1.5ml To 2ml Tubes)

R005-G Bio Basic 1 UNIT 61.57 EUR

Block 15 x 1.5mL Centrifuge Tubes for Dry Bath with Heated Lid - EACH

BLO1254 Scientific Laboratory Supplies EACH 238.95 EUR

Block, 6 x 5ml centrifuge tubes (17mm diameter)

BSH100-5MT Benchmark Scientific 1 PC 142.76 EUR

Block, 12 x 5.0ml centrifuge tubes (17mm diameter)

BSW5MT Benchmark Scientific 1 PC 149.04 EUR

Block, 6 x 5ml centrifuge tubes (17mm diameter)

BCM1405-B5MT Bio Basic 1 pcs, 1 UNIT 227.29 EUR

Block, 12 x 5.0ml centrifuge tubes (17mm diameter)

BCM1412-BSW5MT Bio Basic 1 pcs, 1 UNIT 233.21 EUR

15ml Centrifuge Tube, Screw Cap, Natural, 100/Bag

BT888-N Bio Basic 1PK, 100UNIT 74.29 EUR

Centrifuge 5804 + Rotor S-4-72 + adapters 15/50ml tubes- IVD Only - EACH

E5804000560 Scientific Laboratory Supplies EACH 8100 EUR

Block, 8x5ml centrifuge tubes, for MultiTherm Touch

H5100-5MT Benchmark Scientific 1 each 374.92 EUR

5 mL Centrifuge Tubes, Clear, Round, Lock Cap, Non-Sterile, 200/pk, 2000/cs

603011 NEST Biotechnology 2000 pcs/cs 99.99 EUR

Centrifuge Tube, 5ml, 200 per. pk. (4 bags of 50)

C1005-T5-Clear Benchmark Scientific 1 each 44.5 EUR

Centrifuge Tube, 5ml, 200 per. pk. (4 bags of 50)

C1005-T5_Clear Benchmark Scientific each 44.5 EUR

Centrifuge 5804R + Rotor S-4-72 + adapters 15/50ml tubes- IVD Only - EACH

E5805000661 Scientific Laboratory Supplies EACH 11284.65 EUR

Centrifuge 5810 + Rotor S-4-104 + adapters 15/50ml tubes- IVD Only - EACH

E5810000564 Scientific Laboratory Supplies EACH 10631.25 EUR

Centrifuge 5810R + Rotor S-4-104 + adapters 15/50ml tubes- IVD Only - EACH

E5811000665 Scientific Laboratory Supplies EACH 13902.3 EUR

250 mL PP Centrifuge Tubes with Plug Seal Cap, Racked, Sterile, 6/pk, 24/cs

622002 NEST Biotechnology 24 pcs/cs 38.17 EUR

500 mL PP Centrifuge Tubes with Plug Seal Cap, Racked, Sterile, 6/pk, 24/cs

623002 NEST Biotechnology 24 pcs/cs 45.65 EUR

15mL Rack for Conical Bottom Centrifuge Tubes - PK20

431355 Scientific Laboratory Supplies PK20 45.9 EUR

50mL Rack for Conical Bottom Centrifuge Tubes - PK20

4365 Scientific Laboratory Supplies PK20 58.05 EUR

50ml Skirted Centrifuge Tube, Green Cap, 25/Bag

TK943-G Bio Basic 1PK, 25UNIT 67.31 EUR

Cool rack 9 wells for 15ml centrifuge tubes - EACH

HOM2740 Scientific Laboratory Supplies EACH 1120.69 EUR

Cool rack 4 wells for 50ml centrifuge tubes - EACH

HOM2742 Scientific Laboratory Supplies EACH 1120.69 EUR

High Speed Centrifuge, Adapt for 1.5/2.0 mL Microcentrifuge Tubes, 500-1200 RPM

102101 NEST Biotechnology 1 pcs/cs 184.36 EUR

Falcon Conical 175ml PP Centrifuge Tubes Racked - PK48

352076 Scientific Laboratory Supplies PK48 141.75 EUR

50ml Skirted Centrifuge Tube, Yellow Cap, 25/Bag

TK943-Y Bio Basic 1PK, 25UNIT 67.31 EUR

15ml Centrifuge Tube, Screw Cap, Red, Sterile, 100/Bag

BT888-SR Bio Basic 1PK, 100UNIT 82.27 EUR

Falcon Conical 15ml PP Centrifuge Tubes Racked - PK500

352097 Scientific Laboratory Supplies PK500 245.7 EUR

Falcon Conical 50ml PP Centrifuge Tubes Racked - PK500

352098 Scientific Laboratory Supplies PK500 260.55 EUR

Kimax Reuseable Glass Centrifuge tubes oil 203mm - PK12

TUB2716 Scientific Laboratory Supplies PK12 977.4 EUR

Block 6 x 5mL centrifuge tubes (17mm diameter) - EACH

BLO1256 Scientific Laboratory Supplies EACH 207.9 EUR

Block 12 x 5.0mL centrifuge tubes (17mm diameter) - EACH

BLO1276 Scientific Laboratory Supplies EACH 218.7 EUR

15ml Centrifuge Tube, Screw Cap, Blue, Sterile, 100/Bag

BT888-SB Bio Basic 1PK, 100UNIT 87.42 EUR

15ml Centrifuge Tube, Screw Cap, Yellow, Sterile, 100/Bag

BT888-SY Bio Basic 1PK, 100UNIT 82.27 EUR

50 mL Centrifuge Tube, Bulk, Sterile, 25/pk, 500/cs

602052 NEST Biotechnology 500 pcs/cs 63.91 EUR

Falcon Conical 15ml Ps Multipack Centrifuge Tubes - PK500

352095 Scientific Laboratory Supplies PK500 226.8 EUR

15 mL Centrifuge Tube, Amber Color, Rack(PS Rack), Sterile, 50/pk, 500/cs

601201 NEST Biotechnology 500 pcs/cs 67.54 EUR

CoolRack XT 5ml holds 12 x 5ml centrifuge tubes - EACH

432060 Scientific Laboratory Supplies EACH 394.2 EUR

15ml Centrifuge Tube, Screw Cap, Natural, Sterile, 100/Bag

BT888-SN Bio Basic 1PK, 100UNIT 82.94 EUR

15mL Flip Top Centrifuge Tubes Sterile DNase Free - PK500

ARG1154 Scientific Laboratory Supplies PK500 405 EUR

50mL Flip Top Centrifuge Tubes Sterile DNase Free - PK500

ARG1156 Scientific Laboratory Supplies PK500 537.3 EUR

50ml High Speed Centrifuge Tube, Natural cap, 25/Bag

CT790-N Bio Basic 1PK, 25UNIT 72.64 EUR

Snap Cap Polyethylene For Centrifuge Tubes Size 2 - PK500

TUB2728 Scientific Laboratory Supplies PK500 97.2 EUR

Benchmark Centrifuge Tube Red 5mL (4 bags of 50) - PK200

CEN2048 Scientific Laboratory Supplies PK200 67.5 EUR

Benchmark Centrifuge Tube Blue 5mL (4 bags of 50) - PK200

CEN2046 Scientific Laboratory Supplies PK200 67.5 EUR

50ml Skirted Centrifuge Tube, Green Cap, Sterile, 25/Bag

TK943-GS Bio Basic 1PK, 25UNIT 69.72 EUR

Benchmark Centrifuge Tube Clear 5mL (4 bags of 50) - PK200

CEN2045 Scientific Laboratory Supplies PK200 67.5 EUR

Benchmark Centrifuge Tube Green 5mL (4 bags of 50) - PK200

CEN2047 Scientific Laboratory Supplies PK200 67.5 EUR

Benchmark Centrifuge Tube Black 5mL (4 bags of 50) - PK200

CEN2051 Scientific Laboratory Supplies PK200 67.37 EUR

50ml Skirted Centrifuge Tube, Yellow Cap, Sterile, 25/Bag

TK943-YS Bio Basic 1PK, 25UNIT 69.72 EUR

Benchmark Centrifuge Tube Yellow 5mL (4 bags of 50) - PK200

CEN2049 Scientific Laboratory Supplies PK200 67.5 EUR

50 mL Centrifuge Tube, Rack (PS Rack), Sterile, 25/pk, 500/cs

602051 NEST Biotechnology 500 pcs/cs 74.25 EUR

Corning 15mL PP Centrifuge Tubes Rack Packed with CentriStar Cap Sterile 50/Rack 500/Case - PK500

430790 Scientific Laboratory Supplies PK500 248.4 EUR

50ml High Speed Centrifuge Tube, Natural cap, Sterile, 25/Bag

CT790-SN Bio Basic 1PK, 25UNIT 73.57 EUR

15ml centrifuge tubes, rack pack, sterile, flat top caps, graduation

SGB011-R SEEN GROUP LIMITED 50pcs/rack, 500pcs/carton 40 EUR

50ml centrifuge tubes, rack pack, sterile, flat top caps, graduation

SGB012-R SEEN GROUP LIMITED 25pcs/rack, 500pcs/carton 50 EUR

DB 2.1 Single block for 12 x 15ml conical centrifuge tubes - EACH

BLO6032 Scientific Laboratory Supplies EACH 183.6 EUR

Kimax Centrifuge tubes graduated beaded top white scale 10ml - PK12

TUB2708 Scientific Laboratory Supplies PK12 469.8 EUR

Kimax Reuseable Glass Centrifuge tubes plain high strength 15ml - PK6

TUB2718 Scientific Laboratory Supplies PK6 137.7 EUR

Centrifuge Tube, Conical, 500mL, PP, sterile, with screw-cap, 8 per bag, 5 bags per case, 40/cs

C1500 MTC Bio 40 239 EUR

Holder for up to eight 15ml centrifuge tubes, for Bench-Top Shaker

099ASR815 Glascol each 648 EUR

Holder for up to eight 50ml centrifuge tubes, for Bench-Top Shaker

099ASR850 Glascol each 648 EUR

50ml Conical Centrifuge Tubes, Green Cap, Sterile, 25unit (cardboard rack)

CT788-GS Bio Basic 1PK, 25UNIT 73.62 EUR

50ml Conical Centrifuge Tubes, Yellow Cap, Sterile, 25unit (cardboard rack)

CT788-YS Bio Basic 1PK, 25UNIT 73.62 EUR

MICRO CENTRIFUGE TUBE, AMBER, 5 ML, 250/1250

MCT-500-X CORNING 250/pk 228 EUR

DB 3.1 Single block centrifuge tube combination 4 x 1.5; 3 x 15 ml and 2 x 50ml - EACH

BLO6036 Scientific Laboratory Supplies EACH 183.6 EUR

50 mL Centrifuge Tube, Self-Standing, Bulk, Sterile, 25/pk, 500/cs

602072 NEST Biotechnology 500 pcs/cs 73.26 EUR

Corning 15mL PP Centrifuge Tubes Rack Packed with Plug Seal Cap Sterile 50/Rack 500/Case - PK500

430052 Scientific Laboratory Supplies PK500 248.4 EUR

Corning 15mL PET Centrifuge Tubes Rack Packed with Plug Seal Cap Sterile 50/Rack 500/Case - PK500

430055 Scientific Laboratory Supplies PK500 259.2 EUR

MICRO CENTRIFUGE TUBE, MAXYCLEAR, 5 ML, 250/1250

MCT-500-C CORNING 250/pk 187.2 EUR

Centrifuge Tube

C1005-T5*-Clear Benchmark Scientific 1 PC 117.16 EUR

50ml PP centrifuge tube, free standing, flat screw cap, 25/sterile bag, 500/cs

C2605 MTC Bio 500/pack 205.85 EUR

30ml PP centrifuge tube, free standing, flat screw cap, 25/sterile bag, 500/cs

C2630 MTC Bio 500/pack 169.05 EUR

Rack for 4 x 500mL centrifuge tubes, plastic coated wire, autoclavable, 1/ea

C1500-RK MTC Bio 1 86.11 EUR

50 mL Centrifuge Tube, Amber Color, Rack (PS Rack), Sterile, 25/pk, 500/cs

602201 NEST Biotechnology 500 pcs/cs 93.72 EUR

Sterile Centrifuge Tube 5mL (10 bags of 20) - PK200

CEN2053 Scientific Laboratory Supplies PK200 82.35 EUR

Sterile Centrifuge Tube, 5ml, 200 per. pk. (10 bags of 20)

C1005-T5-ST Benchmark Scientific 1 PC 54 EUR

Corning 500mL PP Centrifuge Tubes with Plug Seal Cap Sterile 6/Pack 36/Case - PK36

431123 Scientific Laboratory Supplies PK36 363.15 EUR

Kimax Reuseable Glass Centrifuge tubes graduated beaded top white scale 15ml - PK12

TUB2710 Scientific Laboratory Supplies PK12 363.15 EUR

Kimax Reuseable Glass Centrifuge tubes graduated beaded top white scale 50ml - PK12

TUB2712 Scientific Laboratory Supplies PK12 550.8 EUR

Corning 250mL PP Centrifuge Tubes with Plug Seal Cap Sterile 6/Pack 102/Case - PK102

430776 Scientific Laboratory Supplies PK102 352.35 EUR

MICRO CENTRIFUGE TUBE, MAXYCLEAR, 5 ML, STERILE, 250/1250

MCT-500-C-S CORNING 250/pk 201.6 EUR

FALCON®POLYSTYRENE PLUG SEAL SCREW CAPS FOR 50ML CONICAL BOTTOM CENTRIFUGE TUBES, STERILE, 50/PACK, 1000/CASE

358206 CORNING 50/pk 145.2 EUR

Kimax Centrifuge tubes disposable borosilicate glass plain snap cap finish 15ml - PK125

TUB2706 Scientific Laboratory Supplies PK125 257.85 EUR

Corning 15mL PP Centrifuge Tubes Bulk Packed with CentriStar Cap Sterile 25/Sleeve 500/Case - PK500

430791 Scientific Laboratory Supplies PK500 245.7 EUR

Kimax Centrifuge tubes disposable borosilicate glass plain screw thread finish 50ml - PK72

TUB2704 Scientific Laboratory Supplies PK72 332.1 EUR

Aluminum Insert Block with 24 positions for 15ml Centrifuge tubes (Use with small system)

109AYH-2416-15 Glascol each 320 EUR

Kimax Centrifuge tubes disposable borosilicate glass plain screw thread finish 10ml - PK125

TUB2700 Scientific Laboratory Supplies PK125 256.5 EUR

Kimax Centrifuge tubes disposable borosilicate glass plain screw thread finish 15ml - PK125

TUB2702 Scientific Laboratory Supplies PK125 265.95 EUR

Oil Centrifuge Tube 100ml - PK2

F87990 Scientific Laboratory Supplies PK2 175.5 EUR

FALCON® 15ML HIGH CLARITY PP CENTRIFUGE TUBE, CONICAL BOTTOM, WITH DOME-SEAL SCREW CAP, STERILE, 50/BAG, 500/CASE

352196 CORNING 50/pk 158.4 EUR

Corning 500ml Centrifuge tube with MLL/FLL dip tube and filter - PK2

11750 Scientific Laboratory Supplies PK2 344.25 EUR

Eppendorf Fixed-angle rotor F-35-30-17 for Centrifuge 5702 30 x 15ml Falcon Tubes - EACH

E5702704008 Scientific Laboratory Supplies EACH 847.8 EUR

Corning 50mL PP Centrifuge Tubes Conical Bottom CentriStar Cap Bulk Packed Sterile 25/Sleeve500/Case - PK500

430829 Scientific Laboratory Supplies PK500 255.15 EUR

Aluminum Insert Block with 12 positions for up to 50ml centrifuge tubes (Use with small system)

109AYH-2429-50 Glascol each 344 EUR

Aluminum Insert Block with 24 positions for up to 50ml centrifuge tubes (Use with large system)

109AYH-4829-50 Glascol each 374 EUR

Corning 50mL PP Centrifuge Tubes Conical Bottom CentriStar Cap Rack Packed Sterile 25/Rack 500/Case - PK500

430828 Scientific Laboratory Supplies PK500 286.2 EUR

Corning 15mL PP Centrifuge Tubes Bulk Packed with Plug Seal Cap Sterile 25/Sleeve 500/Case - PK500

430766 Scientific Laboratory Supplies PK500 249.75 EUR

Corning 50mL PP Centrifuge Tubes Self-Standing CentriStar Cap Bulk Packed Sterile 25/Sleeve 500/Case - PK500

430921 Scientific Laboratory Supplies PK500 307.8 EUR

Centrifuge Tube ASTM 100ml - PK2

362338 Scientific Laboratory Supplies PK2 190.35 EUR

11-Well Centrifuge Tube Box

R011-N Bio Basic 1 UNIT 61.82 EUR

12-Well Centrifuge Tube Box

R012-N Bio Basic 1 UNIT 62.62 EUR

24-Well Centrifuge Tube Box

R024-N Bio Basic 1 UNIT 63.13 EUR

Corning 15mL PET Centrifuge Tubes Bulk Packed with Plug Seal Cap Sterile 25/Sleeve 500/Case - PK500

430053 Scientific Laboratory Supplies PK500 249.75 EUR

Centrifuge 5920R 15/50mL package

E5948000460 Scientific Laboratory Supplies EACH 14031.36 EUR

Centrifuge 5920R 15/50mL package

E5948000560 Scientific Laboratory Supplies EACH 14281.92 EUR

Centrifuge Tube 15ML, Mauve cap

PW1306N-100X1NO EWC Diagnostics 1 unit 18.5 EUR

Centrifuge Tube 15ML, Mauve cap

PW1306N-20X25NO EWC Diagnostics 1 unit 87.03 EUR

Centrifuge Tube 15ML, Mauve cap

PW1306N-4X25NO EWC Diagnostics 1 unit 17.99 EUR

Centrifuge Tube 50ML, Mauve cap

PW1309N-100X1NO EWC Diagnostics 1 unit 24.43 EUR

Centrifuge Tube 50ML, Mauve cap

PW1309N-20X25NO EWC Diagnostics 1 unit 108.39 EUR

Centrifuge Tube 50ML, Mauve cap

PW1309N-4X25NO EWC Diagnostics 1 unit 22.02 EUR

Nunc Centrifuge Tube 11mm - PK480

337846 Scientific Laboratory Supplies PK480 500.85 EUR

Bottle Centrifuge Pp 250 Ml - PK4

3141-0250 Scientific Laboratory Supplies PK4 148.5 EUR

Bottle Centrifuge Pp 450 Ml - PK4

3141-0500 Scientific Laboratory Supplies PK4 194.4 EUR

DB 2.2 Single block for 5 x 50ml conical centrifuge tubes or 6; 12/13 or 25mm test tube combinations - EACH

BLO6034 Scientific Laboratory Supplies EACH 183.6 EUR

Sterile 50mL Centrifuge Tube (TPP)

TUBE50TPP-S Next Advance 320box 348 EUR

Centrifuge tube 1.5ml natural - PK500

CEN9308M Scientific Laboratory Supplies PK500 17.55 EUR

Micro Centrifuge Tube - B Attached

PW146-1X500NO EWC Diagnostics 1 unit 17 EUR

Micro Centrifuge Tube-C Attached

PW147-1X500NO EWC Diagnostics 1 unit 18.14 EUR

Micro Centrifuge Tube-D Attached

PW276-1X500NO EWC Diagnostics 1 unit 20.6 EUR

Centrifuge Tube Nalge 50Ml Pp - PK10

CEN9058 Scientific Laboratory Supplies PK10 62.1 EUR

Brand Blaubrand Centrifuge Tube - PK2

BR362038-2EA Scientific Laboratory Supplies PK2 110.7 EUR

The correlation between the glass tube and YZ tube methods was good for WBC (r=0.996), RBC (r=0.964), and epithelial cell count (r=0.939), but the correlation was weak for casts (r=0.511 for hyaline casts; r=0.359 for other casts). In conclusion, the YZ tube method of urine sediment analyses is an easy and accurate quantitative method; it is recommended as the method of choice for detecting and quantifying pathological casts in urine